Littelfuse 373 User Manual

Radial Lead Fuses

®

TR5® > Fast-Acting > 373 Series

373 Series, TR5®, Fast-Acting Fuse

Description

®

The TR5

373 Series are fast–acting 250V rated fuses, that

are designed in accordance to UL 248 –14.

Features

Agency Approvals

• ReducedPCBspace

requirements

• Directsolderableor
plug-in versions

• Internationallyapproved

• Lowinternalresistance

• Vibrationresistant

• Halogenfree

• Lead-free

• Availablefrom50mA

to 10A

• Shocksafecasing

Agency Agency File Number Ampere Range

File number: E 67006 50mA - 6.3A

Certification: 51378 50mA - 6.3A

File number: E67006 8A - 10A

Electrical Characteristics

% of Ampere

Rating

200%

Ampere Rating Opening Time

50mA - 6.3A 5 Seconds, Max.

8A - 10A 60 Seconds, Max.

Applications

• BatteryChargers

• ConsumerElectronics

Additional Information

Datasheet

• Powersupplies

• IndustrialControllers

Resources

Electrical Characteristics

Voltage

Amp

Code

Rated

Current

Voltage

Rating

Breaking Capacity

Drop

1.0×I

N

max. (mV)

0050 50mA 250V
0063 63mA 250V 1300 85 0.00023 X X
0080 80mA 250V 1200 100 0.00037 X X

0100 100mA 250V 110 0 110 0.0013 X X
0125 125mA 250V 1000 125 0.0019 X X

0160 160mA 250V 950 155 0.004 X X
0200 200mA 250V 850 170 0.0065 X X
0250 250mA 250V 750 19 0 0.014 X X
0315 315mA 250V 650 205 0.032 X X
0400 400mA 250V 230 95 0.016 X X
0500 500mA 250V 220 110 0.025 X X
0630 630mA 250V 210 135 0.045 X X
0800 800mA 250V 200 160 0.069 X X

110 0 1.00A 250V 190 190 0.125 X X

112 5 1.25A 250V 180 225 0.2 X X

116 0 1.60A 250V 17 0 275 0.38 X X
1200 2.00A 250V 160 320 0.63 X X
1250 2.50A 250V 150 375 1.2 X X

1315 3.15A 250V 140 445 1. 9 X X
1400 4.00A 250V 130 520 3.5 X X
1500 5.00A 250V 120 630 6.2 X X
1630 6.30A 250V 115 1000 9.1 X X
1800 8.00A

210 0 10.00A

1. Conducting path cross-section minimum ≥ 0.2mm
Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand.

1

250V 120 1600 30 X

1

250V 110 2000 55

50A / 250 VAC

50-60 Hz

cos ϕ = 1.0

2

1400 70 0.0001

Power

Dissipation

1.0×I

N

max. (mW)

Melting
Integral

10×I

max. (A

N

2

s)

Samples

Agency Approvals

X X

X

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

Radial Lead Fuses

CURRENT IN AMPERES

100000

050A

063A0.080A0.100A0.125A

160A

200A0.250A

315A0.400A

500A0.630A

A

0A

300

240

Temperature (°C) - Measured on bottom side of board

TR5® > Fast-Acting > 373 Series

Temperature Rerating Curve

140

120

100

80

60

40

PERCENTOF RATING

20

0

-40-20 020406080

23°C

AMBIENTTEMPERATURE(°C)

Average Time Current Curves

0.

0.

0.

0.

0.

0.800

0.

10000

1000

100

10

TIME IN SECONDS

1

0.100

0.010

0.001

0.100 1 10 1000.02

1.25A

1.60A

2.00A

3.15A

5.00A

6.30A

8.00A

1.00A

10.0

2.50A

4.00A

Soldering Parameters - Wave Soldering

280

260

240

220

200

180

160

140

120

100

80

60

40

20

0

0

102030405060708090

Time (Seconds)

Preheat Time

Recommended Process Parameters:

Wave Parameter Lead-Free Recommendation

Preheat:

(Depends on Flux Activation Temperature)

Temperature Minimum:
Temperature Maximum:

(Typical Industry Recommendation)

100

° C

150

° C

Preheat Time: 60-180 seconds

Solder Pot Temperature:

260

° C Maximum

Solder Dwell Time: 2-5 seconds

100

110

120

130

140

150

160

170

180

190

200

210

220

Dwell Time

Cooling Time

Recommended Hand-Solder Parameters:

230

Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.

Note: These devices are not recommended for IR or
Convection Reflow process.

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13